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7 SETTING THE ASA/ISO FILM SPEED
7 Setting the ASA/ISO Film Speed
Turn the setting dial, while pressing the lock release button, until the desired film
speed aligns with the index. The dial cannot be turned lower than ASA6 or higher
than ASA6400. The table on the next page shows the ASA/ISO film speeds which
can be set on the New Canon F-1. Figures in parentheses are intermediate speeds
which are indic ated by dots on the ASA/ISO dial.
ASA/ISOis a numerical rating of the film’s sensitivity to light. The higher the num-
ber, the faster the film and the more sensitive it is to a given amount of light as
compared to a film with a lower number. The film manufacturer’s ASA/ISO rating
can be found on the film cartridge, the carton, and the data sheet.
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